Yes we all know the tegarus speak similar to Eritrean tigrigna (with a lot of different accents) language but when they believe they achieve some thing great (which is a lie to being with) say that they are TIGRIGNA speaking people, a sign they believe is a heroic thing to do, because they believe Eritreans are achievers but at the same time leave out the other 8 Eritrean languages speaking Eritreans are part of the agames believe shines Eritreanism rather than saying that they are tegarus.
And what got a language has to do with being successful or achiever?